M4.5 earthquake 12 km WNW of La Unión, Mexico
A magnitude 4.5 earthquake struck 12 km WNW of La Unión, Mexico on Tue, Sep 24, 1985, 1:03 AM CST (07:03 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.7 44 km WNW of El Habillal, Mexico. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1985-09-24 07:03:13 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 18.046° N, 101.911° W
- Region
- Mexico
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 23 in the 30 days before it.
After
- 4.515 km S of Playa Azul, Mexico · 14973 days ago · 33 km deep · 51 km away
- 3.714 km SSW of La Unión, Mexico · 14972 days ago · 33 km deep · 21 km away
- 5.744 km WNW of El Habillal, Mexico · 14972 days ago · 30 km deep · 89 km away
- 4.712 km E of Petacalco, Mexico · 14970 days ago · 33 km deep · 12 km away
- 3.618 km WSW of Ixtapa, Mexico · 14962 days ago · 33 km deep · 50 km away
- 4.06 km SSW of Los Achotes, Mexico · 14961 days ago · 46 km deep · 75 km away
- 3.624 km SSW of Palos Blancos, Mexico · 14957 days ago · 10 km deep · 96 km away
- 3.839 km SW of Palos Blancos, Mexico · 14957 days ago · 10 km deep · 96 km away
- 5.924 km NW of El Habillal, Mexico · 14938 days ago · 39 km deep · 68 km away
- 4.211 km NE of San Miguelito, Mexico · 14933 days ago · 53 km deep · 68 km away
Before
- 3.713 km SSW of Vallecitos de Zaragoza, Mexico · 14974 days ago · 33 km deep · 64 km away
- 3.55 km WSW of Infiernillo (Morelos de Infiernillo), Mexico · 14976 days ago · 33 km deep · 25 km away
- 3.518 km W of Ixtapa, Mexico · 14976 days ago · 33 km deep · 47 km away
- 3.631 km SSW of Ixtapa-Zihuatanejo, Mexico · 14976 days ago · 33 km deep · 82 km away
- 7.67 km N of Pantla, Mexico · 14977 days ago · 31 km deep · 39 km away
- 3.85 km W of Lagunillas, Mexico · 14977 days ago · 33 km deep · 29 km away
- 4.933 km W of El Habillal, Mexico · 14977 days ago · 33 km deep · 82 km away
- 4.24 km ENE of Pantla, Mexico · 14977 days ago · 33 km deep · 46 km away
- 3.628 km SSE of Petacalco, Mexico · 14977 days ago · 33 km deep · 36 km away
- 4.018 km WSW of Ixtapa, Mexico · 14977 days ago · 33 km deep · 53 km away
- 3.945 km S of Petacalco, Mexico · 14977 days ago · 33 km deep · 56 km away
- 3.858 km WSW of Ixtapa, Mexico · 14977 days ago · 33 km deep · 74 km away
- 4.214 km N of El Coacoyul, Mexico · 14977 days ago · 33 km deep · 57 km away
- 4.513 km S of Ixtapa-Zihuatanejo, Mexico · 14977 days ago · 33 km deep · 68 km away
- 4.78 km S of Ixtapa-Zihuatanejo, Mexico · 14977 days ago · 33 km deep · 65 km away
- 3.65 km SSE of Lagunillas, Mexico · 14978 days ago · 33 km deep · 38 km away
- 5.016 km ENE of Pantla, Mexico · 14978 days ago · 33 km deep · 53 km away
- 4.237 km SW of Tumbiscatío de Ruiz, Mexico · 14978 days ago · 33 km deep · 86 km away
- 4.048 km WNW of El Habillal, Mexico · 14978 days ago · 33 km deep · 93 km away
- 4.86 km SW of El Habillal, Mexico · 14978 days ago · 33 km deep · 53 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002k2f. Read Tue, Sep 22, 2026, 2:35 PM UTC.